import type { FastifyInstance } from 'fastify'

export async function userRoutes(fastify: FastifyInstance) {
  fastify.post('/users', {
    schema: {
      body: {
        type: 'object',
        properties: {
          name: { type: 'string' },
          email: { type: 'string', format: 'email' },
        },
        required: ['name', 'email'],
      },
      response: {
        201: {
          type: 'object',
          properties: {
            id: { type: 'string' },
            name: { type: 'string' },
            email: { type: 'string' },
          },
        },
      },
      'x-category': 'constructor',
      'x-ensures': [
        'status:201',
        'response_body(this).id != null',
        'response_body(this).name == request_body(this).name',
      ],
    },
  }, async (req, reply) => {
    const { name, email } = req.body as { name: string; email: string }
    const id = `user-${Date.now()}`
    const user = { id, name, email }
    fastify.db.users.set(id, user)
    reply.status(201)
    return user
  })

  fastify.get('/users/:id', {
    schema: {
      params: {
        type: 'object',
        properties: {
          id: { type: 'string' },
        },
        required: ['id'],
      },
      response: {
        200: {
          type: 'object',
          properties: {
            id: { type: 'string' },
            name: { type: 'string' },
            email: { type: 'string' },
          },
        },
      },
      'x-category': 'observer',
      'x-ensures': [
        'status:200',
        'response_body(this).id == request_params(this).id',
      ],
    },
  }, async (req) => {
    const { id } = req.params as { id: string }
    const user = fastify.db.users.get(id)
    if (!user) {
      throw new Error('User not found')
    }
    return user
  })
}